We also keep seeing these NASA animations showing how the globe (and especially Siberia, which is today’s topic) has supposedly warmed significantly over the past century.

Siberian winter temperatures “plummeting”

Yet, a very recent paper authored by Pengfei Zhang et al appearing in the journal Science tells us that adversely cold Eurasian winters have been getting more frequent and that winter temperatures in Siberia are “plummeting”.

Over recent decades, adverse cold winters have occurred more frequently in Eurasia, concurrent with a pronounced warming over the Arctic, coined as the ‘warm Arctic cold Siberia (or continents)’ (WACS) pattern.”

Harsh winters more frequent

EOS here reported on this publication and asks: “Why Are Siberian Temperatures Plummeting While the Arctic Warms?”

EOS also reported that an “explanation for this ‘warm Arctic, cold Siberia’ pattern remained elusive” but that the scientists, using “an advanced atmospheric general circulation model”, suspect it has to to do with an interaction between low Arctic sea ice levels and the stratosphere. EOS reports:

Climate change is warming the Arctic and melting sea ice, yet Siberia has experienced significantly colder and harsher winters for the past few decades. A study published yesterday in Science Advances shows that interactions between melting regional sea ice and the stratosphere—an atmospheric layer spanning about 10–50 kilometers above Earth’s surface—play a key role in creating these frigid winter conditions.”

Still “very unclear” why Siberian winters getting harsher

As to why low sea ice extent in the fall would cause the whole winter to be harsh, here Zhang feeds the EOS quite a hefty load of BS, claiming that it is “due to the long timescale of stratospheric processes”.

In the introduction of the paper, the authors at least admit that it’s still very unclear why Siberian winters have been getting harsher over the past decades:

The inconsistent and conflicting results of these studies indicate that the mechanism behind the colder Siberia is still unclear.”

It is a profound sign of the times that these authors would have to invoke a convoluted stratospheric scheme to explain how a small sea ice loss could be responsible for the generation of more frequent and denser, colder polar air masses over Eurasia.
The straw man is claiming the Arctic is getting warmer, as opposed to detailing that some regions or the Arctic are getting warmer while others are getting cooler. The rest is algorithm weighting of rare stations.
As usual 500 hPa maps are the rage to explain 1,500m thick polar air masses ejections…
In 1993 Marcel Leroux published a paper about Mobile Polar Highs claiming that since the 1970s atmospheric circulation entered a rapid mode characterized with renewed higher frequency of stronger polar air masses descents with their associated advections of warm air along mountain relief constrained corridors. It elegantly explains the loss of sea ice in Barents-Kara as a dynamic warming consequence. A similar situation is witnessed in Antarctica where the Peninsula concentrates warming while the continent experiences a slight cooling trend. Leroux bases his analysis among other things on mean pressure evolution, showing increase since the 1970s for a given latitude, sign of colder air masses descending further toward the equator.
The paper is here: http://ddata.over-blog.com/xxxyyy/2/32/25/79/Leroux-Global-and-Planetary-Change-1993.pdf
Leroux died 10 y ago.

Why is it that creative writing is now considered science?
Where is the hypothesis, the testing?
Where are the predictions and falsification?
I hate the destruction of the scientific method by alarmists

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